Upper dental impression tray



FIG. 1 is a rear bottom perspective view of an upper dental impression tray, showing my new design;

FIG. 2 is a front bottom perspective view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a right-side elevational view thereof;

FIG. 6 is a left-side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view of FIG. 1.

The broken lines in the figures represent portions of the upper dental impression tray that form no part of the claimed design. 

CLAIM The ornamental design for an upper dental impression tray, as shown and described. 